File-cutting machine



A. WBED. File Cutting Machine.

No. 239,412. Patented March29, 188|".

INVENTORL feafa,

Unfrrnn STATES PATENT reiten.;

ALFRED WEED., OF PHILADELPHIA, PENNSYLVANIA.

FILE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 239,412, dated March29, 1881. n i Application tiled September 19, 1879.

To all whom it may concern: I

Beit known that I, ALFRED WEED, of Philadelphia, Pennsylvania, haveinvented certain new and useful Improvements in FileUutting Machines, ofwhich the following is a specitication, reference being had to theaccompanying drawings, wherein- Figure l is a front elevation of themachine; Fig. 2, a vertical longitudinal section through its center;Fig. 3, a vertical cross section through its center 5 Fig. 4, anenlarged perspective view of the chisel-carrier and its actuatingdevice, and Fig. 5 arear elevation of the top portion of the supportingframe-work.

Certain of my improvements relate to alilecutting machine in which thebed-piece is maintained permanently in ahorizontal position and thechisel and its carrier are swung in order to deliver a blow of therequisite Obliquity. Heretofore when this construction has been adopted,the swinging chisel-carrier has been actuated by a long lever the lineof whose fulcrum was parallel to the trunnions ofthe carrier. Thus thelever lay in the plane of oscillation of the chisel and the swingingnecessarily varied its relation to the lever-arm. To compensate for thisirregularity a combination of links was used, and the mechanism was notonly complicated, but weakened by the number ot' pivot- 3o jointsrequired.

In my improved machine the chisel is actuated by a cam' whose axiscoincides with the axis of oscillation of the carrier. Thus, whatever bethe angle at which the carrier is placed, its relative position toitsactuating device remains unchanged. This mechanism is simple, compact,and strong.

My improvements further consist in so constructin g the slidingbed-piece as to afford the greatest firmness under the blow of thechisel.

The base-plate A is, by preference, cast in one piece with thestandardB, the former provided with bearings for the shaft of pulley Gr,the latter similarly provided for the shaft G of pulley P. The shaft C,after passing through a sleeve, o, terminates in an eccentric doublecam, d. Suspended upon and revolving around the end of the sleeve 'u isthe swinging frame H, slotted vertically to receive the lug h of thechisel-carrierE. The guide-piecesRR, screwed onto the face of H andoverlapping the inclined sides of the chisel-carrier, form ways in whichthe latter slides. A spring, I, whose tension is regulated by theset-screw J fitting in the overhanging arm of the frame H, pressesagainst the top of the chisel-carrier E. In the rear of the swingingframe H are two screws, 0 o` project-ing through slots n win thestandard B, by means of which the swinging frame can be set and clampedat any desirable inclination. The lower end of the chisel-carrier Ereceives the head z', which can be revolved laterally therein and set inany position by means of a screw, n. The head is slotted to receive thechisel l, adjusted by thescrew l.

The blank t to be cut rests upon the V-shaped sliding bed-piece V, whichis preferably provided with a semi-cylindrical leveler, c, fitting in acorresponding groove of the bed-piece, to enable the lile to adjustitself to the blow. A presserfoot, m, swinging with the frame H andprovided with a slotted arm, m', retains the tileblank in position bymeans ofa lug or pinwvliich presses on the latter. The V-shapedbed-piece V travels in a correspondingly-shaped way formed in thebase-pla-te A, and is propelled by means of the haltnutf with a weightedarm, F, which rests upon the screw c, worked by the pinion D and screw gof the pulley G. A band, K, connects the latter with the main pulley P.

The operation is as follows: The swinging frame H beinginclined at thedesired angle and clamped in position by the screws o o, the tileblank tis placed in position upon the leveler c. The presser-foot is thenadjusted with its pin or lug upon the blank, and the arm m' is properlyweighted. The main pulley P is then revolved, and the eccentric-cam draises the pin h and chisel-carrier E, compressing the spring I. Whenthe pin h is released by the cam the spring I drives the chisel-carrierdownward and delivers the blow upon the blank t, forming a tooth. As therevolution of the pulleys P and Gr continues, the bed-pieceV is movedforward by means of the screw c and half-nut j', andthe 9 5 IOO piece isold. I therefore do not claim, broadly, lates, and an actuating-camWhose shaft passes either of these features; but through said sleeve,substantially as set forth. I desire to secure by Letters Patent thefol- 3. The combination of the V-shaped sliding lowing improvements: bedpiece with the correspondingly formed 5 1. Thecombination, With the swinging chisel- 1 Ways of thebed-plate, substantially as set forth. 15

carrier, of an actuating-cam whose axis coinl cides With the axis ofoscillation of the carrier, ALFRED WEED' substantially as set forth.

2. The combination of a swinging chisel-earro rier, a sleeve upon whichsaid carrier oseil- Wituesses WM. H. MYERS, RICHARD S. HUNTER.

